History of Versioned Data in Vasternorrland Collection

The table in question is a historical dataset, belonging to a larger collection sourced from the Swedish website, Lantmäteriet. This historical table captures the evolution of its base table over time, by keeping track of each row's version history. It achieves this by uniquely identifying each row using a combination of the extraction date and the row number. Furthermore, whenever a new version of a row is extracted, the table records the date of this event. If a row is the most recent version, its end date will be left blank.

In addition to the basic information from its base table, this history table includes geographical data, transformed from a shapefile format. A shapefile stores geographical features in a simple, non-topological format, which can represent these features as points, lines, or polygons.

This table, with its historical and geographical data, can serve a variety of analytical purposes. For example, it could be used to track changes in land usage over time, by comparing the areas represented in different versions of each row. Alternatively, it could be used to examine the relationship between different geographical features and the changes that occur over time. Lastly, the table could be used in predictive analytics, using the historical data to forecast future trends.